From 288379f050284087578b77e04f040b57db3db3f8 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Mon, 19 Jan 2009 16:43:59 -0800 Subject: net: Remove redundant NAPI functions Following the removal of the unused struct net_device * parameter from the NAPI functions named *netif_rx_* in commit 908a7a1, they are exactly equivalent to the corresponding *napi_* functions and are therefore redundant. Signed-off-by: Ben Hutchings Acked-by: Neil Horman Signed-off-by: David S. Miller --- drivers/net/tulip/interrupt.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'drivers/net/tulip/interrupt.c') diff --git a/drivers/net/tulip/interrupt.c b/drivers/net/tulip/interrupt.c index 6c3428a37c0b..9f946d421088 100644 --- a/drivers/net/tulip/interrupt.c +++ b/drivers/net/tulip/interrupt.c @@ -103,7 +103,7 @@ void oom_timer(unsigned long data) { struct net_device *dev = (struct net_device *)data; struct tulip_private *tp = netdev_priv(dev); - netif_rx_schedule(&tp->napi); + napi_schedule(&tp->napi); } int tulip_poll(struct napi_struct *napi, int budget) @@ -300,7 +300,7 @@ int tulip_poll(struct napi_struct *napi, int budget) /* Remove us from polling list and enable RX intr. */ - netif_rx_complete(napi); + napi_complete(napi); iowrite32(tulip_tbl[tp->chip_id].valid_intrs, tp->base_addr+CSR7); /* The last op happens after poll completion. Which means the following: @@ -333,10 +333,10 @@ int tulip_poll(struct napi_struct *napi, int budget) /* Think: timer_pending() was an explicit signature of bug. * Timer can be pending now but fired and completed - * before we did netif_rx_complete(). See? We would lose it. */ + * before we did napi_complete(). See? We would lose it. */ /* remove ourselves from the polling list */ - netif_rx_complete(napi); + napi_complete(napi); return work_done; } @@ -519,7 +519,7 @@ irqreturn_t tulip_interrupt(int irq, void *dev_instance) rxd++; /* Mask RX intrs and add the device to poll list. */ iowrite32(tulip_tbl[tp->chip_id].valid_intrs&~RxPollInt, ioaddr + CSR7); - netif_rx_schedule(&tp->napi); + napi_schedule(&tp->napi); if (!(csr5&~(AbnormalIntr|NormalIntr|RxPollInt|TPLnkPass))) break; -- cgit v1.2.3 From 1f8ae0a21d83f43006d7f6d2862e921dbf2eeddd Mon Sep 17 00:00:00 2001 From: Tomasz Lemiech Date: Fri, 13 Mar 2009 15:43:38 -0700 Subject: tulip: Fix for MTU problems with 802.1q tagged frames The original patch was submitted last year but wasn't discussed or applied because of missing maintainer's CCs. I only fixed some formatting errors, but as I saw tulip is very badly formatted and needs further work. Original description: This patch fixes MTU problem, which occurs when using 802.1q VLANs. We should allow receiving frames of up to 1518 bytes in length, instead of 1514. Based on patch written by Ben McKeegan for 2.4.x kernels. It is archived at http://www.candelatech.com/~greear/vlan/howto.html#tulip I've adjusted a few things to make it apply on 2.6.x kernels. Tested on D-Link DFE-570TX quad-fastethernet card. Signed-off-by: Tomasz Lemiech Signed-off-by: Ivan Vecera Signed-off-by: Ben McKeegan Acked-by: Grant Grundler Signed-off-by: David S. Miller --- drivers/net/tulip/interrupt.c | 84 ++++++++++++++++++++++++++++--------------- drivers/net/tulip/tulip.h | 32 ++++++++++++++++- 2 files changed, 86 insertions(+), 30 deletions(-) (limited to 'drivers/net/tulip/interrupt.c') diff --git a/drivers/net/tulip/interrupt.c b/drivers/net/tulip/interrupt.c index 9f946d421088..c8d220cf2cce 100644 --- a/drivers/net/tulip/interrupt.c +++ b/drivers/net/tulip/interrupt.c @@ -140,6 +140,7 @@ int tulip_poll(struct napi_struct *napi, int budget) /* If we own the next entry, it is a new packet. Send it up. */ while ( ! (tp->rx_ring[entry].status & cpu_to_le32(DescOwned))) { s32 status = le32_to_cpu(tp->rx_ring[entry].status); + short pkt_len; if (tp->dirty_rx + RX_RING_SIZE == tp->cur_rx) break; @@ -151,8 +152,28 @@ int tulip_poll(struct napi_struct *napi, int budget) if (++work_done >= budget) goto not_done; - if ((status & 0x38008300) != 0x0300) { - if ((status & 0x38000300) != 0x0300) { + /* + * Omit the four octet CRC from the length. + * (May not be considered valid until we have + * checked status for RxLengthOver2047 bits) + */ + pkt_len = ((status >> 16) & 0x7ff) - 4; + + /* + * Maximum pkt_len is 1518 (1514 + vlan header) + * Anything higher than this is always invalid + * regardless of RxLengthOver2047 bits + */ + + if ((status & (RxLengthOver2047 | + RxDescCRCError | + RxDescCollisionSeen | + RxDescRunt | + RxDescDescErr | + RxWholePkt)) != RxWholePkt + || pkt_len > 1518) { + if ((status & (RxLengthOver2047 | + RxWholePkt)) != RxWholePkt) { /* Ingore earlier buffers. */ if ((status & 0xffff) != 0x7fff) { if (tulip_debug > 1) @@ -161,30 +182,23 @@ int tulip_poll(struct napi_struct *napi, int budget) dev->name, status); tp->stats.rx_length_errors++; } - } else if (status & RxDescFatalErr) { + } else { /* There was a fatal error. */ if (tulip_debug > 2) printk(KERN_DEBUG "%s: Receive error, Rx status %8.8x.\n", dev->name, status); tp->stats.rx_errors++; /* end of a packet.*/ - if (status & 0x0890) tp->stats.rx_length_errors++; + if (pkt_len > 1518 || + (status & RxDescRunt)) + tp->stats.rx_length_errors++; + if (status & 0x0004) tp->stats.rx_frame_errors++; if (status & 0x0002) tp->stats.rx_crc_errors++; if (status & 0x0001) tp->stats.rx_fifo_errors++; } } else { - /* Omit the four octet CRC from the length. */ - short pkt_len = ((status >> 16) & 0x7ff) - 4; struct sk_buff *skb; -#ifndef final_version - if (pkt_len > 1518) { - printk(KERN_WARNING "%s: Bogus packet size of %d (%#x).\n", - dev->name, pkt_len, pkt_len); - pkt_len = 1518; - tp->stats.rx_length_errors++; - } -#endif /* Check if the packet is long enough to accept without copying to a minimally-sized skbuff. */ if (pkt_len < tulip_rx_copybreak @@ -356,14 +370,35 @@ static int tulip_rx(struct net_device *dev) /* If we own the next entry, it is a new packet. Send it up. */ while ( ! (tp->rx_ring[entry].status & cpu_to_le32(DescOwned))) { s32 status = le32_to_cpu(tp->rx_ring[entry].status); + short pkt_len; if (tulip_debug > 5) printk(KERN_DEBUG "%s: In tulip_rx(), entry %d %8.8x.\n", dev->name, entry, status); if (--rx_work_limit < 0) break; - if ((status & 0x38008300) != 0x0300) { - if ((status & 0x38000300) != 0x0300) { + + /* + Omit the four octet CRC from the length. + (May not be considered valid until we have + checked status for RxLengthOver2047 bits) + */ + pkt_len = ((status >> 16) & 0x7ff) - 4; + /* + Maximum pkt_len is 1518 (1514 + vlan header) + Anything higher than this is always invalid + regardless of RxLengthOver2047 bits + */ + + if ((status & (RxLengthOver2047 | + RxDescCRCError | + RxDescCollisionSeen | + RxDescRunt | + RxDescDescErr | + RxWholePkt)) != RxWholePkt + || pkt_len > 1518) { + if ((status & (RxLengthOver2047 | + RxWholePkt)) != RxWholePkt) { /* Ingore earlier buffers. */ if ((status & 0xffff) != 0x7fff) { if (tulip_debug > 1) @@ -372,31 +407,22 @@ static int tulip_rx(struct net_device *dev) dev->name, status); tp->stats.rx_length_errors++; } - } else if (status & RxDescFatalErr) { + } else { /* There was a fatal error. */ if (tulip_debug > 2) printk(KERN_DEBUG "%s: Receive error, Rx status %8.8x.\n", dev->name, status); tp->stats.rx_errors++; /* end of a packet.*/ - if (status & 0x0890) tp->stats.rx_length_errors++; + if (pkt_len > 1518 || + (status & RxDescRunt)) + tp->stats.rx_length_errors++; if (status & 0x0004) tp->stats.rx_frame_errors++; if (status & 0x0002) tp->stats.rx_crc_errors++; if (status & 0x0001) tp->stats.rx_fifo_errors++; } } else { - /* Omit the four octet CRC from the length. */ - short pkt_len = ((status >> 16) & 0x7ff) - 4; struct sk_buff *skb; -#ifndef final_version - if (pkt_len > 1518) { - printk(KERN_WARNING "%s: Bogus packet size of %d (%#x).\n", - dev->name, pkt_len, pkt_len); - pkt_len = 1518; - tp->stats.rx_length_errors++; - } -#endif - /* Check if the packet is long enough to accept without copying to a minimally-sized skbuff. */ if (pkt_len < tulip_rx_copybreak diff --git a/drivers/net/tulip/tulip.h b/drivers/net/tulip/tulip.h index 19abbc36b60a..0afa2d4f9472 100644 --- a/drivers/net/tulip/tulip.h +++ b/drivers/net/tulip/tulip.h @@ -201,8 +201,38 @@ enum desc_status_bits { DescStartPkt = 0x20000000, DescEndRing = 0x02000000, DescUseLink = 0x01000000, - RxDescFatalErr = 0x008000, + + /* + * Error summary flag is logical or of 'CRC Error', 'Collision Seen', + * 'Frame Too Long', 'Runt' and 'Descriptor Error' flags generated + * within tulip chip. + */ + RxDescErrorSummary = 0x8000, + RxDescCRCError = 0x0002, + RxDescCollisionSeen = 0x0040, + + /* + * 'Frame Too Long' flag is set if packet length including CRC exceeds + * 1518. However, a full sized VLAN tagged frame is 1522 bytes + * including CRC. + * + * The tulip chip does not block oversized frames, and if this flag is + * set on a receive descriptor it does not indicate the frame has been + * truncated. The receive descriptor also includes the actual length. + * Therefore we can safety ignore this flag and check the length + * ourselves. + */ + RxDescFrameTooLong = 0x0080, + RxDescRunt = 0x0800, + RxDescDescErr = 0x4000, RxWholePkt = 0x00000300, + /* + * Top three bits of 14 bit frame length (status bits 27-29) should + * never be set as that would make frame over 2047 bytes. The Receive + * Watchdog flag (bit 4) may indicate the length is over 2048 and the + * length field is invalid. + */ + RxLengthOver2047 = 0x38000010 }; -- cgit v1.2.3